The Warning

Powerful and sometimes disturbing account of Britain's defences against enemy attack - made six months before WWII. Powerful and sometimes disturbing account of Britain's defences against enemy attack - made six months before WWII. Powerful and sometimes disturbing account of Britain's defences against enemy attack - made six months before WWII. Powerful and sometimes disturbing account of Britain's defences against enemy attack - made six months before WWII.